Transformer



Apri: 20,1926. www? v C. FAYER TRANSFORKEH Filed Dec. 22. 1922 IN1/ENTR I @arias 232g@ BYZ(/Z l ri ATTORNY,

Patented Apr. 20, 1926.

UNITED STATES PATE CI-IARLESFAYER, 0F FLUSI-IING, NEW YCRK, ASSIGNOB TO 1F] APYLER ELECTRIC COM- PANY, INC., A CORPORATION 0F NET YRK.

Tannsronnna.

Application filed December 22, 1922.

To all whom t 'may cof/wem:

Be it known that CHARLES FAYER, a citizen of the United States, and resident of Flushing, Long Island, in the county of Queens and State of New York, have invented cert-ain new and useful Improvements in Transformers, of which the following i-s a full, clear, and concise description.

My invention relates to transformers, my special purpose being to produce a transformer allowing of a considerable number of uses and particularly adapted for varying within wide limits the voltage and amperage of high frequency currents. l

Summarized more in detail, my invention contemplates ay transformer provided with a single. primary winding and with plurality of secondary windings, and in which the secondary windings may have different sizes and be of different character, the primary winding being `provided with means whereby it may be moved relatively to the secondary windings in such manner as to render very convenient the making or alteration of inductive couplings, and thereby to vary the. strength and character of the currents induced in the secondary windings.

Among the advantages of my improved transformer are the following:

1. The regulation as between the primary and secondary winding is rendered gradual; or in other words the regulation takes place without distinct gradations.

2. Only one winding is energized inductively at a time, or in other words only one of the windings at time is subjected to the action of magnetic flux, thus avoiding undue waste of electric energy.

3. The change or shift of the primary winding from one secondary winding to the other is made with great rapidity and ease.

4. The primary and secondary winding are so mounted and arranged as to promote good cooling of the windings. i

Reference is made to the accompanying drawing forming a part of my specifica tion, and in which like reference characters indicate like parts throughout the several figures.

Figure 1 is a fragmentary view, partly in elevation and partly in section, showing one form of my' invention.

Figure 2 is the section on the line 2 2 of Figure 1, looking in the direction indicated by the arrows.

vit may be turned.

Serial' No. 608,398.

Figure. 3 is a section on the line 3 3 of Figure'l, looking in the direction indicated by the arrows.

Figure 4 is a substantially vertical section through another form of my invention, and is a section substantially on the line 4 4 of Figure 5, looking in the direction indicated by the arrows.

Figure 5 is a section substantially on the line 5 5 of Figure 4, looking in the direction indicated by the arrows.

Figure 6 is a sectional view of certain mechanism appearing in the upper portion of Figure 4, and including means for holding various movable parts in predetermined normal positions.

Mounted upon a back board 7 is a. to board 8, extending in a. plane at a right angle to the back board.

Mounted upon the back board 7 are two secondary windings 9 and 10, differing in size and character. The winding 9 is made up of considerable number of turns of rather small wire. The winding 10 consists of a relatively small number of turns of wire which is coarse as compared with that of the winding 9. A pair of binding posts 11 and 12 are connected with the winding 10, and connected with these binding posts are a pair of conductors 13 and 14, which may for convenience be formed into a cord, shown fragmentarily at 15.

Another pair of binding posts 1G and 17 are connected with the winding 9. A pair of conductors 18, 19, are connected with the binding posts 16 and 1.7, and are conveniently formed into a cord 20. The cords 15 and 2O are used separately and independently, and at dierent times, for conveying the secondary currents generated by the re- Spective windings 9 and 10.

A pair of small bearings 21 and 22 are secured upon the back board 7 by screws 23. Extending through these bearings is a stem 24, provided with a knob 25 by which The stem 24 carries a pointer 26, which is moved adjacent the surface of a dial plate 27, and employed in connection therewith, for indicating the an-V guiar position of the shaft 24 and parts carried thereby.

Mounted rigidly upon the stem 24 and movable therewith is a block 2S of insulating material. Mounted upon this block, and extending therefrom in a plane coinciding in direction with the length of the stem 24, is a primary winding 29. A. hook 30, carri-ed by the block 28 of insulating material, engages the winding 29 and holds it tirmly in position upon the block.

Mounted rigidly upon the stem 24 is a locking disk 31, provided with a notch 32, as indicated more particularly in Figure 3. A. locking spring 33, having the shape indicated in Figure 3, is held in position upon the back board 7 by means 01" screws 34. The purpose of the locking spring is to hold the disk 31 rather lirmly in a predetermined normal position when thelvarious movable parts occupy the positions indicated for them in Figure 3. rihe tension of the locking spring is not sutl'iciently great, however, to prevent the rotation of the locking disk 31 when the operator seeks to turn the stem by means of the knob 25.

A conducting cord 35 is connected with the primary winding 29 and with a pair oit binding .posts 36 and 37, for the purpose of facilitating the connecting of the primary winding with any convenient source of high frequency current, suitable for energizing the primary winding.

Thev form of my device appearing in Figures 4, 5 and 6 diiers from the form shown in the other ligures merely in the construction and arrangement of a few parts constituting a gearing for the purpose et shifting the primary winding into diiferent angular positions relative to the secondary windings.

Mounted upon a board 33 is a bearing 39, and below this bearing are two bearings 21 and 22 above described. Engaging the bearing 39 and supported thereby is a sleeve 40. Extending through this sleeve, and through the bearings 39, 21 and 22, is a revoluble stein 41. Mounted upon this stem is a gear wheel 42, secured in position by a set screw 43. Secured to the bearing 39 is a pawl block 44, of the form shown more particularly in Figure 6. rFhe pawl block 44 is provided with a hole 47, and litted into this hole is a pawl 46 and a spring 47. The pawl is provided with a portion 43 et reduced diameter, extending upwardly through a hole in the top of the pawl block. The pawl 46, pressed downwardly by the spring 47, engages the top of the gear wheel 42. This gear wheel is provided with a pawl pit 49, so arranged that the lower end of the pawl 46 may be thrustinto it. The lower end of the pawl is convex, and the surface of the pawl pit is concave, so that when the gear wheel 42 is in a predetermined normal position the pawl 46, rest-- ing in the pawl pit 49, holds the gear wheel 42 in a corresponding predetermined position; namely, in such position that the primary winding 29 occupies a central position intermediate the two secondary windings 9 and 10, as indicated more particularly in Figure 5.

Mounted rigidly upon the stem 41 is a disk 50, and extending from this disk to the block 28 isa brace 51. This brace strengthens the block, and assists in maintaining the primary winding 29 in its proper relation to the stem 41.

Meshing with the gear wheel 42 is another gear wheel 52, the latter being mounted rigidly upon a revoluble stub shaft 53, carrying a knob 54. The stub shaft 53 also carries a pointer 55, lthe latter being disposed adjacent a dial plate 56 and movable relatively to the same. rlhe operator by turning the knob 54 rotates the shaft 53, and thus turns the pointer 55 and gear wheel 52. The rotation of this gear wheel causes the gear wheel 42 to turn, and the rotation of this wheel causes the stem 41 toi'ock and thus to shift the angular position of the primary winding 29.

Except as otherwise indicated, the structure and action of the form oit my device shown in Figures 4, 5 and 6 is substantially the same as that oi' the form shown in the other ligures.

The operation of either form of my device is as follows:

The operator having connected the primary winding with a suitable source of alternating, pulsating or interrupted current, and either or both oi the secondary windings being properly connected to distribute the secondary currents, the operator by turning the knob shifts the angular position of the primary winding, eitheu in a clockwise di rection according to Figures 3 and 5 or in a counter-clockwise direction according to Vthese iigures. rfhus the primary winding 29 may be moved from the position shown for it by full lines in Figures 3 and 5 to the position indicated for it by dotted lines in Figure 5, or it may be moved into any angular position intermediate these two positions, its movements being without gradations, so that it may be positioned with great exactness.

The primary winding 29 may be similarly moved relatively to the secondary winding 10.

lThus the primary winding may be brought into a great variety of angular positions relatively to either oi the two secondary windings. The net result is that the operator can make an iniinite variety or loose couplings, the looseness of the couplings being controllable at will. Each of the windingsis well cooled by the air..

Aside from the variations thus made in the character of the secondary currents generated in the secondary windings, the characteristics of the secondary currents are still further modified by virtue of the factl that the two secondary windings may diii'er from each other greatly in their relative proportions.

It stands to reason that the relations of the primary and secondary windings may be reversed. That is to say that the windings 9 and l0 may be energized by means of primary currents, and the winding 29 may be energized by the inductive action of' either of the other windings.

In the use of either form of my invention, the primary winding may be brought to the position indicated for it by full lines in Figures 3 and 5, and maintained rather firmly in this position, in which the primary winding is absolutely neutral as regards its action upon either of the two secondary windings.

My transformer may be used in different relations and for a variety of different purposes, including radio and X-ray devices, and therapeutic apparatus; and may be employed generally for many kinds of experimentation. It is well adapted for any work in which an air-core transformer with variable characteristics is required.

I do not limit myself to the precise mechanism shown, as variations may be made therein without departing from my invention, the spirit of which is commensurate with my claims.

I claim:

l. A; transformer, comprising a board, a pair of secondary windings supported by said board and each having its general axis extending in a. direction lateral to the plane of the board, and a primary winding supported by said board and arranged to turn into different angular positions relatively to each of said secondary windings. y

In a transformer the combination of a supporting board, a pair of windings mounted thereupon and disposed with their general axes parallel to each other, and a third winding supported by said board and disposed adjacent said pair of windings, said third winding being mounted to swing into different angular positions relatively to each of said first mentioned windings.

3. In a transformer, the combination of a supporting board, a pair of windings mounted thereupon and disposed with their general. axes substantially parallel with each other, a third winding mounted upon said board so as to be capable of turning into different angular positions relatively to each of said first mentioned windings, said second mentioned winding having a general cross diameter greater' than that of either of said first mentioned windings so as to be capable of encircling the same, and means controllable at the will of the operator for turning said second mentioned winding into different angular positions relative to each of said first mentioned windings.

d. ln a transformer, the combination ofl a supporting member, a pair of windings mounted thereupon and each having a fixed position relatively thereto, a single winding mounted upon said supporting member and having' a general annular form, and also having a cross diameter greater than that of either of said rst mentioned windings, said second mentioned winding being movable into different angular positions relatively to said first mentioned windings, so that said second mentioned winding may encircle .either of said first mentioned windings or not, according to the position into which said second mentioned winding is moved relatively to said first mentioned windings.

In a transformer, the combination of a supporting board, a pair of windings mounted thereupon, a third winding supported by said board and having the general form of a closed loop, said third winding being movable into and out of position where it encircles either of said first mentioned windings, and means controllable by the operator for securing said second mentioned 'winding in a predetermined definite position relative to each of said first mentioned windings.

Signed at Long Island City, in the county of Queens and State of New York, this 6th dav of December 1922.

CHARLES PAYER. 

